Abstract: A method for producing a high temperature component includes a shaping step of shaping a powder compact of a desired high temperature component shape using a specific powder shaping method, from an alloy powder of ?? precipitation strengthening-type Ni-based alloy, and a crystal grain coarsening step of coarsening a crystal grain size of the powder compact by heat treatment, wherein the powder compact contains 0.002% or more and 0.07% or less of C, and 5.40% or more and 8.40% or less of Al+Ti by mass percentage.

Abstract: A carbon dioxide adsorbent including silica gel and an amine compound carried by the silica gel. The silica gel has a spherical shape, a particle size ranging from 1 mm to 5 mm inclusive, an average pore diameter ranging from 10 nm to 100 nm inclusive, a pore volume ranging from 0.1 cm3/g to 1.3 cm3/g inclusive, and a waterproof property N that is defined by an expression (1) and that is not lower than 45%, N=(W/W0)×100??(1) where N is the waterproof property in percentage (%) of the silica gel, W0 is a total number of particles of the silica gel immersed in water, W is a number of particles of the silica gel not subjected to breakage out of W0.

Abstract: A method for producing a high temperature component includes a shaping step of shaping a powder compact of a desired high temperature component shape using a specific powder shaping method, from an alloy powder of ?? precipitation strengthening-type Ni-based alloy, and a crystal grain coarsening step of coarsening a crystal grain size of the powder compact by heat treatment, wherein the powder compact contains 0.002% or more and 0.07% or less of C, and 5.40% or more and 8.40% or less of Al+Ti by mass percentage.

Abstract: A method for manufacturing a carbon dioxide adsorbent includes: forming a kneaded product containing a hydrophilic fiber, a powdery porous material, and an aqueous hydrophilic binder dispersion into particles and drying the particles to generate porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder; and preparing an aqueous amine solution having an amine concentration of 5% or more and 70% or less and a temperature of 10° C. or higher and 100° C. or lower, impregnating the aqueous amine solution into the porous material particles, and aeration-drying the porous material particles impregnating the amine. The carbon dioxide adsorbent contains the porous material particles and the amine carried by the porous material particles, the porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder.

Abstract: A shaped article production method includes: fabricating an intermediate article by powder bed fusion using a powder of a gamma prime precipitation strengthening-type Ni-based alloy; and heat-treating the intermediate article. The Ni-based alloy contains, in percent by mass, 10 to 16% Cr, 4.5 to 7.5% Al, 2.8 to 6.2% Mo, 0.8 to 4% Nb+Ta, 0.01 to 2% Ti, 0.01 to 0.3% Zr, and 0.01 to 0.3% C. The fabricating the intermediate article includes applying a laser beam to a layer of the powder along scan lines parallel to one another, and in applying the laser beam, a value obtained by dividing a pitch between the scan lines by a laser spot diameter is in the range of 0.6 to 1.0.

Abstract: A method of producing a shaped article by powder bed fusion using a powder of a gamma prime precipitation strengthening-type Ni-based alloy. The Ni-based alloy contains, in percent by mass, 10 to 16% Cr, 4.5 to 7.5% Al, 2.8 to 6.2% Mo, 0.8 to 4% Nb+Ta, 0.01 to 2% Ti, 0.01 to 0.3% Zr, and 0.01 to 0.3% C. In applying a laser beam to a layer of the powder along scan lines parallel to one another, a value obtained by dividing a pitch between the scan lines by a laser spot diameter is in the range of 0.2 to 1.0.

Abstract: A method for producing a high temperature component includes a shaping step of shaping a powder compact of a desired high temperature component shape using a specific powder shaping method, from an alloy powder of ?? precipitation strengthening-type Ni-based alloy, and a crystal grain coarsening step of coarsening a crystal grain size of the powder compact by heat treatment, wherein the powder compact contains 0.002% or more and 0.07% or less of C, and 5.40% or more and 8.40% or less of Al+Ti by mass percentage.

Abstract: A carbon dioxide adsorbent including silica gel and an amine compound carried by the silica gel. The silica gel has a spherical shape, a particle size ranging from 1 mm to 5 mm inclusive, an average pore diameter ranging from 10 nm to 100 nm inclusive, a pore volume ranging from 0.1 cm3/g to 1.3 cm3/g inclusive, and a waterproof property N that is defined by an expression (1) and that is not lower than 45%, N=(W/W0)×100??(1) where N is the waterproof property in percentage (%) of the silica gel, W0 is a total number of particles of the silica gel immersed in water, W is a number of particles of the silica gel not subjected to breakage out of W0.

Abstract: A method for manufacturing a carbon dioxide adsorbent includes preparing an amine aqueous solution having an amine compound concentration ranging from 5% to 70% inclusive and a temperature ranging from 10° C. to 100° C. inclusive, impregnating silica gel with the amine aqueous solution, and aeration-drying the silica gel carrying the amine compound. The silica gel has a particle size ranging from 1 mm to 5 mm inclusive, an average pore diameter ranging from 10 nm to 100 nm inclusive, and a pore volume ranging from 0.1 cm3/g to 1.3 cm3/g inclusive.

Abstract: A method for manufacturing a carbon dioxide adsorbent includes: forming a kneaded product containing a hydrophilic fiber, a powdery porous material, and an aqueous hydrophilic binder dispersion into particles and drying the particles to generate porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder; and preparing an aqueous amine solution having an amine concentration of 5% or more and 70% or less and a temperature of 10° C. or higher and 100° C. or lower, impregnating the aqueous amine solution into the porous material particles, and aeration-drying the porous material particles impregnating the amine. The carbon dioxide adsorbent contains the porous material particles and the amine carried by the porous material particles, the porous material particles containing the hydrophilic fiber and the powdery porous material combined by the hydrophilic binder.

Abstract: A method for producing a high temperature component includes a shaping step of shaping a powder compact of a desired high temperature component shape using a specific powder shaping method, from an alloy powder of ?? precipitation strengthening-type Ni-based alloy, and a crystal grain coarsening step of coarsening a crystal grain size of the powder compact by heat treatment, wherein the powder compact contains 0.002% or more and 0.07% or less of C, and 5.40% or more and 8.40% or less of Al+Ti by mass percentage.

Abstract: A method for manufacturing a carbon dioxide adsorbent includes preparing an amine aqueous solution having an amine compound concentration ranging from 5% to 70% inclusive and a temperature ranging from 10° C. to 100° C. inclusive, impregnating silica gel with the amine aqueous solution, and aeration-drying the silica gel carrying the amine compound. The silica gel has a particle size ranging from 1 mm to 5 mm inclusive, an average pore diameter ranging from 10 nm to 100 nm inclusive, and a pore volume ranging from 0.1 cm3/g to 1.3 cm3/g inclusive.